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Some studies have shown the presence of psychopathological disorders in transient global amnesia.
Aims
To determine whether transient global amnesia is associated with psychopathological disorders and to assess the influence of these psychopathological disorders on memory impairments.
Method
Levels of anxiety and depression before and during transient global amnesia were rated. Memory performances were assessed by means of original episodic memory tasks and working memory tasks. These data were collected in 17 individuals observed during the very acute phase, 18 individuals examined in the peri-acute phase and 26 controls.
Results
During the acute phase, participants with transient global amnesia displayed a higher level of anxiety and a more depressed mood than controls. An alteration of emotional state, as measured by the Adjective Mood Scale, was correlated with deficits in anterograde memory.
Conclusions
Transient global amnesia comprises sudden changes in people's emotional state, which has a major impact on and interacts with episodic memory impairment.
By
Bernard Lechevalier, Service de Neurologie, CHU de Caen,
Jany Lambert, Service de Neurologie, CHU de Caen; Inserm E.0218,
Sylvain Moreau, Service d'ORL, CHU de Caen,
Hervé Platel, Inserm E.0218; Université de Caen,
Fausto Viader, Service de Neurologie, CHU de Caen; Inserm E.0218;
Following strokes, disorders of auditory perception produced by lesions located in the territory of the internal carotid artery or of the vertebrobasilar system can be observed. These disorders were gathered in several different clinical forms, now conventional: auditory agnosia is defined as the impossibility of recognizing environmental sounds, words, and music which the patient, however, is said to hear. Pure word deafness is the impossibility of understanding spoken language to repeat or to write under dictation in the absence of another sign of aphasia. Cortical deafness is defined as the feeling of being deaf contrasting with the integrity of the tonal audiogram. Amusia is auditory agnosia specific for music. These central disorders of auditory perception may result from lesions of either the right, left, or both cerebral hemispheres, usually involving parietotemporal cortical areas (Lechevalier et al., 1999). The outcome may be favorable in some cases of cerebrovascular etiology. In reality, such clinical profiles are far from being so distinct. There are intermediate forms, for example: absolutely pure cases of word deafness (relating to only the sounds of language) are extremely rare. Moreover, evolutionary forms were published, initially observed as a form of cortical deafness, then like an auditory agnosia (Godefroy et al., 1995). In spite of these irregularities it seems to us justified to maintain the individuality of these clinical entities, notably because of the acoustic characteristics of the three types of the sounds (musical, verbal sounds, and environmental sounds).
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